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3 years ago

Fill in the table with whole numbers to make 2.82.82, point, 8 in three different ways.

Mathematics

1 answer:

Gala2k [10]3 years ago

7 0

Answer:

8 ♾ 8

Step-by-step explanation:

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A soccer field is a rectangle 90 meters wide and 120 meters long. The coach asks the players to run from one corner to the corne

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150 meters or so i think

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3 years ago

Latisha earned an 85% today. Her pervious scores were 72%, 89%, and 90%. Calculate her new average (mean)

lidiya [134]

To calculate the average, we will use the following rule:
average = sum of scores / number of scores
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3 years ago

A research firm needs to estimate within 3% the proportion of junior executives leaving large manufacturing companies within thr

Y_Kistochka [10]

Answer:

972 junior executives should be surveyed.

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of $\pi$ , and a confidence level of $1-\alpha$ , we have the following confidence interval of proportions.

$\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}$

In which

z is the zscore that has a pvalue of $1 - \frac{\alpha}{2}$ .

The margin of error is of:

$M = z\sqrt{\frac{\pi(1-\pi)}{n}}$

35% of junior executives left their company within three years.

This means that $\pi = 0.35$

0.95 = 95% confidence level

So $\alpha = 0.05$ , z is the value of Z that has a pvalue of $1 - \frac{0.05}{2} = 0.975$ , so $Z = 1.96$ .

To update this study, how many junior executives should be surveyed?

Within 3% of the proportion, which means that this is n for which M = 0.03. So

$M = z\sqrt{\frac{\pi(1-\pi)}{n}}$

$0.03 = 1.96\sqrt{\frac{0.35*0.65}{n}}$

$0.03\sqrt{n} = 1.96\sqrt{0.35*0.65}$

$\sqrt{n} = \frac{1.96\sqrt{0.35*0.65}}{0.03}$

$(\sqrt{n})^2 = (\frac{1.96\sqrt{0.35*0.65}}{0.03})^2$

$n = 971.2$

Rounding up:

972 junior executives should be surveyed.

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3 years ago

Noah has meter of rope . How many pieces of rope of length 1/2 meter can he cut from it ? Draw a diagram to illustrate your solu

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2? if he had only one meter that would be correct

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4 years ago

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The balance on your business credit card was $215 before you purchased 5 new chairs for the office. Each chair cost $75.

STatiana [176]

Answer:

$590

Step-by-step explanation:

The credit card balance on the card is : $215.

You put on his charge 5 chairs that each cost $75.

So 75 * 5 = 375.

You have now added to your credit card balance of $375 and before you bought the chairs, it was $215. You must add these totals to get your new balance after purchasing 5 new chairs for the office.

375 + 215 = 590.

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3 years ago

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